I made a DIY dollcloset for my daughter's 18 inch dolls.
American Girl 18 inch Doll Movie Night Food by gleefulbambino on Etsy
Easy Doll Socks you can make for your 18 inch or AG Dolls at artsyfartsymama.com
American Girl Doll or 18 inch Doll Horse Stable and Fence Plans. $14.95, via Etsy.
The Miche Designs No-Sew Foam Clogs 18 inch Doll clothes pattern. Create a trendy pair of crocs for your 18" doll with this easy new sew pattern.
18 inch doll bed plans | ... Kid's Kit: Doll Bed | Free and Easy DIY Project and Furniture Plans
Tutorial: Make a Sleeping Bag and Tent for an American Girl Doll! | Thefrugalcrafter's Weblog
18 inch doll mermaid tale blanket with free pattern
A doll car seat will fit 15 and 18 inch dolls. It might fit a little smaller but not really any bigger of a doll. I made two in one afternoon nap time.